Silverado Abnormally Starting?
#1
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Silverado Abnormally Starting?
i have a 2005 Chevy Silverado 4.8L V8 with about 150,000 miles on it, and when i fire it up after its warm, the rpms go up to about 1800 or even 1900 or so. when its cold it goes to about 1400 or so (which i am guessing is normal) my fathers truck (2002 Chevy Silverado 1500 with a 5.3L V8) starts normally, only going to around 1000 rpms. not sure if mine is a big deal or not, but its rather annoying. any help with this problem would be much appreciated. thanks!
#4
Follow the PCV line back to the top of the intake manifold. There will be a short piece of flexible hose connecting the the "hard line" to the manifold. Disconnect here and plug your VAC gauge into the manifold side. VAC testing can detect so many things. A lost art since OBD's came on the scene. Hope this helps.
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